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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="jam.history"></a><a class="link" href="history.html" title="History">History</a>
</h2></div></div></div>
<div class="variablelist">
<p class="title"><b></b></p>
<dl>
<dt><span class="term">3.1.18</span></dt>
<dd>
<p>
            After years of bjam developments.. This is going to be the last unbundled
            release of the 3.1.x series. From this point forward bjam will only be
            bundled as part of the larger Boost Build system. And hence will likely
            change name at some point. As a side effect of this move people will
            get more frequent release of bjam (or whatever it ends up being called).
          </p>
<p>
            </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">New built-ins, MD5, SPLIT_BY_CHARACTERS, PRECIOUS, PAD, FILE_OPEN, and
            UPDATE_NOW. -- <span class="emphasis"><em>Vladimir P.</em></span>
</li>
<li class="listitem">Ensure all file descriptors
            are closed when executing actions complete on *nix. -- <span class="emphasis"><em>Noel
            B.</em></span>
</li>
<li class="listitem">Fix warnings, patch from Mateusz Loskot. -- <span class="emphasis"><em>Vladimir
            P.</em></span>
</li>
<li class="listitem">Add KEEP_GOING var to programatically override the '-q'
            option. -- <span class="emphasis"><em>Vladimir P.</em></span>
</li>
<li class="listitem">Add more parameters, up to
            19 from 9, to rule invocations. Patch from Jonathan Biggar. -- <span class="emphasis"><em>Vladimir
            P.</em></span>
</li>
<li class="listitem">Print failed command output even if the normally quite
            '-d0' option. -- <span class="emphasis"><em>Vladimir P.</em></span>
</li>
<li class="listitem">Build of bjam with
            vc10, aka Visual Studio 2010. -- <span class="emphasis"><em>Vladimir P.</em></span>
</li>
<li class="listitem">More
            macros for detection of OSPLAT, patch from John W. Bito. -- <span class="emphasis"><em>Vladimir
            P.</em></span>
</li>
<li class="listitem">Add PARALLELISM var to programatically override the '-j'
            option. -- <span class="emphasis"><em>Vladimir P.</em></span>
</li>
<li class="listitem">Tweak doc building to allow
            for PDF generation of docs. -- <span class="emphasis"><em>John M.</em></span>
</li>
</ul></div>
<p>
          </p>
</dd>
<dt><span class="term">3.1.17</span></dt>
<dd>
<p>
            A year in the making this release has many stability improvements and
            various performance improvements. And because of the efforts of Jurko
            the code is considerably more readable!
          </p>
<p>
            </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">Reflect the results of calling bjam from Python. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">For building on Windows: Rework how arguments are parsed and tested to
            fix handling of quoted arguments, options arguments, and arguments with
            "=". -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Try to work around at
            least one compiler bug with GCC and variable aliasing that causes crashes
            with hashing file cache entries. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Add
            -Wc,-fno-strict-aliasing for QCC/QNX to avoid the same aliasing crashes
            as in the general GCC 4.x series (thanks to Niklas Angare for the fix).
            -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">On Windows let the child bjam commands
            inherit stdin, as some commands assume it's available. -- <span class="emphasis"><em>Rene
            R.</em></span>
</li>
<li class="listitem">On Windows don't limit bjam output to ASCII as some tools
            output characters in extended character sets. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Isolate running of bjam tests to individual bjam instances to prevent
            possible spillover errors from one test affecting another test. Separate
            the bjam used to run the tests vs. the bjam being tested. And add automatic
            re-building of the bjam being tested. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Fix some possible overrun issues revealed by Fortify build. Thanks to
            Steven Robbins for pointing out the issues. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Handle \n and \r escape sequences. -- <span class="emphasis"><em>Vladimir P.</em></span>
</li>
<li class="listitem">Minor edits to remove -Wall warnings. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Dynamically adjust pwd buffer query size to allow for when PATH_MAX is
            default defined instead of being provided by the system C library. --
            <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Minor perf improvement for bjam by replacing
            hash function with faster version. Only 1% diff for Boost tree. -- <span class="emphasis"><em>Rene
            R.</em></span>
</li>
<li class="listitem">Updated Boost Jam's error location reporting when parsing
            Jamfiles. Now it reports the correct error location information when
            encountering an unexpected EOF. It now also reports where an invalid
            lexical token being read started instead of finished which makes it much
            easier to find errors like unclosed quotes or curly braces. -- <span class="emphasis"><em>Jurko
            G.</em></span>
</li>
<li class="listitem">Removed the -xarch=generic architecture from build.jam
            as this option is unknown so the Sun compilers on Linux. -- <span class="emphasis"><em>Noel
            B.</em></span>
</li>
<li class="listitem">Fixed a bug with T_FATE_ISTMP getting reported as T_FATE_ISTMP
            &amp; T_FATE_NEEDTMP at the same time due to a missing break in a switch
            statement. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Fixed a Boost Jam bug causing
            it to sometimes trigger actions depending on targets that have not been
            built yet. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Added missing documentation
            for Boost Jam's :T variable expansion modifier which converts all back-slashes
            ('\') to forward slashed ('/'). -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Added
            Boost Jam support for executing command lines longer than 2047 characters
            (up to 8191) characters when running on Windows XP or later OS version.
            -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Fixed a Boost Jam bug on Windows causing
            its SHELL command not to work correctly with some commands containing
            quotes. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Corrected a potential memory
            leak in Boost Jam's builtin_shell() function that would appear should
            Boost Jam ever start to release its allocated string objects. -- <span class="emphasis"><em>Jurko
            G.</em></span>
</li>
<li class="listitem">Made all Boost Jam's ECHO commands automatically flush
            the standard output to make that output more promptly displayed to the
            user. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Made Boost Jam tests quote their
            bjam executable name when calling it allowing those executables to contain
            spaces in their name and/or path. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Change
            execunix.c to always use fork() instead of vfork() on the Mac. This works
            around known issues with bjam on PPC under Tiger and a problem reported
            by Rene with bjam on x86 under Leopard. -- <span class="emphasis"><em>Noel B.</em></span>
</li>
<li class="listitem">Corrected a bug in Boost Jam's base Jambase script causing it to trim
            the error message displayed when its boost-build rule gets called multiple
            times. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">When importing from Python into
            an module with empty string as name, import into root module. -- <span class="emphasis"><em>Vladimir
            P.</em></span>
</li>
<li class="listitem">Patch for the NORMALIZE_PATH builtin Boost Jam rule as
            well as an appropriate update for the path.jam Boost Build module where
            that rule was being used to implement path join and related operations.
            -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Fixed a bug causing Boost Jam not to
            handle target file names specified as both short and long file names
            correctly. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Relaxed test, ignoring case
            of drive letter. -- <span class="emphasis"><em>Roland S.</em></span>
</li>
<li class="listitem">Implemented a patch
            contributed by Igor Nazarenko reimplementing the list_sort() function
            to use a C qsort() function instead of a hand-crafted merge-sort algorithm.
            Makes some list sortings (e.g. 1,2,1,2,1,2,1,2, ...) extremely faster,
            in turn significantly speeding up some project builds. -- <span class="emphasis"><em>Jurko
            G.</em></span>
</li>
<li class="listitem">Fixed a bug with bjam not handling the '' root Windows
            path correctly without its drive letter being specified. -- <span class="emphasis"><em>Jurko
            G.</em></span>
</li>
<li class="listitem">Solved the problem with child process returning the value
            259 (Windows constant STILL_ACTIVE) causing bjam never to detect that
            it exited and therefore keep running in an endless loop. -- <span class="emphasis"><em>Jurko
            G.</em></span>
</li>
<li class="listitem">Solved the problem with bjam going into an active wait
            state, hogging up processor resources, when waiting for one of its child
            processes to terminate while not all of its available child process slots
            are being used. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Solved a race condition
            between bjam's output reading/child process termination detection and
            the child process's output generation/termination which could have caused
            bjam not to collect the terminated process's final output. -- <span class="emphasis"><em>Jurko
            G.</em></span>
</li>
<li class="listitem">Change from vfork to fork for executing actions on Darwin
            to improve stability. -- <span class="emphasis"><em>Noel B.</em></span>
</li>
<li class="listitem">Code reformatting
            and cleanups. -- <span class="emphasis"><em>Jurko G.</em></span>
</li>
<li class="listitem">Implement ISFILE built-in.
            -- <span class="emphasis"><em>Vladimir P.</em></span>
</li>
</ul></div>
<p>
          </p>
</dd>
<dt><span class="term">3.1.16</span></dt>
<dd>
<p>
            This is mostly a bug fix release.
          </p>
<p>
            </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">Work around some Windows CMD.EXE programs that will fail executing a
            totally empty batch file. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Add support
            for detection and building with <code class="literal">vc9</code>. -- <span class="emphasis"><em>John
            P.</em></span>
</li>
<li class="listitem">Plug memory leak when closing out actions. Thanks to Martin
            Kortmann for finding this. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Various improvements
            to <code class="literal">__TIMING_RULE__</code> and <code class="literal">__ACTION_RULE__</code>
            target variable hooks. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Change <code class="literal">JAMDATE</code>
            to use common ISO date format. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Add test
            for result status values of simple actions, i.e. empty actions. -- <span class="emphasis"><em>Rene
            R.</em></span>
</li>
<li class="listitem">Fix buffer overrun bug in expanding <code class="literal">@()</code>
            subexpressions. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Check empty string invariants,
            instead of assuming all strings are allocated. And reset strings when
            they are freed. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Add <code class="literal">OSPLAT=PARISC</code>
            for HP-UX PA-RISC. -- <span class="emphasis"><em>Boris G.</em></span>
</li>
<li class="listitem">Make quietly actions
            really quiet by not printing the command output. The output for the quietly
            actions is still available through <code class="literal">__ACTION_RULE__</code>.
            -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Switch intel-win32 to use static multi
            thread runtime since the single thread static runtime is no longer available.
            -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">When setting <code class="literal">OSPLAT</code>,
            check <code class="literal">__ia64</code> macro. -- <span class="emphasis"><em>Boris G.</em></span>
</li>
<li class="listitem">Get the unix timing working correctly. -- <span class="emphasis"><em>Noel B.</em></span>
</li>
<li class="listitem">Add <code class="literal">-fno-strict-aliasing</code> to compilation with gcc.
            Which works around GCC-4.2 crash problems. -- <span class="emphasis"><em>Boris G.</em></span>
</li>
<li class="listitem">Increased support for Python integration. -- <span class="emphasis"><em>Vladimir P.</em></span>,
            <span class="emphasis"><em>Daniel W.</em></span>
</li>
<li class="listitem">Allow specifying options with quotes,
            i.e. <code class="literal">--with-python=xyz</code>, to work around the CMD shell
            using <code class="literal">=</code> as an argument separator. -- <span class="emphasis"><em>Rene
            R.</em></span>
</li>
<li class="listitem">Add values of variables specified with -s to .EVNRION module,
            so that we can override environment on command line. -- <span class="emphasis"><em>Vladimir
            P.</em></span>
</li>
<li class="listitem">Make NORMALIZE_PATH convert \ to /. -- <span class="emphasis"><em>Vladimir
            P.</em></span>
</li>
</ul></div>
<p>
          </p>
</dd>
<dt><span class="term">3.1.15</span></dt>
<dd>
<p>
            This release sees a variety of fixes for long standing Perforce/Jam problems.
            Most of them relating to running actions in parallel with the -jN option.
            The end result of the changes is that running parallel actions is now
            reliably possible in Unix and Windows environments. Many thanks to Noel
            for joining the effort, to implement and fix the Unix side of stuff.
          </p>
<p>
            </p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">Add support for building bjam with pgi and pathscale toolsets. -- <span class="emphasis"><em>Noel
            B.</em></span>
</li>
<li class="listitem">Implement running action commands through pipes (-p option)
            to fix jumbled output when using parallel execution with -j option. This
            is implemented for Unix variants, and Windows (Win32/NT). -- <span class="emphasis"><em>Rene
            R.</em></span>, <span class="emphasis"><em>Noel B.</em></span>
</li>
<li class="listitem">Add "sun" as alias
            to Sun Workshop compiler tools. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Set MAXLINE
            in jam.h to 23k bytes for AIX. The piecemeal archive action was broken
            with the default MAXLINE of 102400. Because the AIX shell uses some of
            the 24k default buffer size for its own use, I reduced it to 23k. --
            <span class="emphasis"><em>Noel B.</em></span>
</li>
<li class="listitem">Make use of output dir options of msvc to
            not polute src dir with compiled files. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">A small fix, so -d+2 will always show the "real" commands being
            executed instead of casually the name of a temporary batch file. --
            <span class="emphasis"><em>Roland S.</em></span>
</li>
<li class="listitem">Add test to check 'bjam -n'. -- <span class="emphasis"><em>Rene
            R.</em></span>
</li>
<li class="listitem">Add test to check 'bjam -d2'. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Bring back missing output of -n option. The -o option continues to be
            broken as it has been for a long time now because of the @ file feature.
            -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Update GC support to work with Boehm
            GC 7.0. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Revert the BOOST_BUILD_PATH change,
            since the directory passed to boost-build should be first in searched
            paths, else project local build system will not be picked correctly.
            The order had been changed to allow searching of alternate user-config.jam
            files from boost build. This better should be done with --user-config=
            switch or similar. -- <span class="emphasis"><em>Roland S.</em></span>
</li>
<li class="listitem">Initial support
            for defining action body from Python. -- <span class="emphasis"><em>Vladimir P.</em></span>
</li>
<li class="listitem">Implement @() expansion during parse phase. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Define OSPLAT var unconditionally, and more generically, when possible.
            -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Fix undeclared INT_MAX on some platforms,
            i.e. Linux. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Modified execunix.c to add
            support for terminating processes that consume too much cpu or that hang
            and fail to consume cpu at all. This in support of the bjam -lx option.
            -- <span class="emphasis"><em>Noel B.</em></span>
</li>
<li class="listitem">Add internal dependencies for multi-file
            generating actions to indicate that the targets all only appear when
            the first target appears. This fixes the long standing problem Perforce/Jam
            has with multi-file actions and parallel execution (-jN). -- <span class="emphasis"><em>Rene
            R.</em></span>
</li>
<li class="listitem">Add test of -l limit option now that it's implemented on
            windows and unix. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Add test for no-op
            @() expansion. -- <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Handle invalid formats
            of @() as doing a straight substitution instead of erroring out. --
            <span class="emphasis"><em>Rene R.</em></span>
</li>
<li class="listitem">Various fixes to compile on SGI/Irix. --
            <span class="emphasis"><em>Noel B.</em></span>
</li>
<li class="listitem">Add output for when actions timeout with
            -lN option. -- <span class="emphasis"><em>Rene R.</em></span>, <span class="emphasis"><em>Noel B.</em></span>
</li>
<li class="listitem">Add needed include (according to XOPEN) for definition of WIFEXITED and
            WEXITSTATUS. -- <span class="emphasis"><em>Markus S.</em></span>
</li>
</ul></div>
<p>
          </p>
</dd>
</dl>
</div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Rene Rivera, David Abrahams, Vladimir Prus<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
</div></td>
</tr></table>
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